scope ring posibilty

I don't know how I got to this auction but it looks like a possibilty. There are no size references but a cooling hose/pipe is about the size of a barrel.
Discuss? Discard? Seems rational.
http://cgi.ebay.com/VW-air-cooling-p...QQcmdZViewItem

ya those do look interesting. they dont look quite 100% on but they are prolly the closest ive seen.

Ya they do look close but just wished somebody made scope rings for ESB Blaster. If you dont have accurate then would you use? Some info will be nice to know.

Thanks!